/**
 * Description:
 * Class Name:subject_3
 * Date:2022/2/14 12:46
 *
 * @author LTisme
 * @version JAVA17
 */
package 疯狂Java讲义.第6章_面向对象_下.课后练习;

@FunctionalInterface
interface functional_interface{
    void need_to_be_implemented(String str);
}

public class subject_3 {
    public static void main(String[] args) {
        functional_interface FI = System.out::println;
        FI.need_to_be_implemented("hihihi");
    }
}
